So I'm learning Joe Satriani's Summer Song and there's this harmonic thing at the beginning which should be easy as it's only four notes. It's A string/5th fret, A/4th fret, D/5th and G/5th. The trouble is that the first note is lower than the second note and my brain refuses to accept this. It keeps making me play it the other way around as its conditioned to higher notes being played on higher frets. The last two notes are no problem as they're on higher strings which my brain will accept. It gets even crazier when I have to descend playing the same notes backwards. Frustrating! I know with practice, I'll get it together but I wish my brain were like a computer. Harmonics are weird!